Rail-mounted passenger device and speed limiting brake for mines

Abstract

The present invention provides a rail-type passenger device for mines and a speed limiting brake thereof, and belongs to the technical field of rail-type passenger devices for mines. The speed limiting brake includes a frame and a first braking device arranged thereon, a running wheel assembly, a centrifugal mechanism, a lever mechanism and a compression mechanism. The first braking device is installed on the frame, and includes a first elastic member and a braking component connected to both ends of the first elastic member. A swinging rod is provided in a rotating drum device on the centrifugal mechanism, and the swinging rod is connected to a center seat through an elastic member. The lever mechanism includes a rotating shaft rotatably arranged on the frame, and both ends of the rotating shaft are respectively fixedly connected with a toggle part, and one of the toggle parts is arranged below the centrifugal mechanism. When overspeeding, the swinging rod is swung out and pushes the trigger part to rotate, so that the contact part is disengaged from the compression mechanism to achieve automatic braking. The passenger device adopts a motor drive in combination with a speed limiting brake, so that it has a compact structure, convenient operation and high safety.

Description

Technical Field

[0001] The invention belongs to the technical field of rail-type passenger devices, and in particular relates to a rail-type passenger device for mines and a speed limiting brake thereof. Background Art

[0002] At present, underground coal mine workers need to travel back and forth between the working face and the mine entrance in a long passage. The traditional walking method is not only time-consuming but also labor-intensive. Although there are commuter locomotives available, the number of such locomotives is limited and they only run at fixed times, which makes it difficult to meet the workers' needs for flexible commuting.

[0003] In recent years, coal mines have begun to use single I-rails for transporting materials or personnel. This I-rail system has the advantages of low cost and easy installation. However, most of the existing I-rail transportation equipment is large-scale transportation equipment, such as monorail cranes. Although these large equipment have strong transportation capacity, they are too costly and inefficient for daily round trips for a small number of people. Therefore, it is of great significance to develop a lightweight personal transportation device suitable for I-rails.

[0004] Speed ​​control is a key factor in ensuring personnel safety during rail transportation. Existing rail-mounted passenger devices usually use a centrifugal speed limiter combined with a hydraulic brake system, that is, when the speed exceeds the limit, the swing rod of the centrifugal speed limiter is thrown out to trigger the hydraulic valve, and the hydraulic cylinder is used to brake. This solution has the following problems.

[0005] However, the speed limiting device in the prior art needs to be equipped with a hydraulic system, which includes a hydraulic station hydraulic oil tank, etc. If the passenger device is equipped with a hydraulic system, its weight will be heavier and the structure will become complicated. In addition, the hydraulic system may fail and fail to brake. These factors are not conducive to the operation of the passenger device on the track and increase costs and safety hazards. Summary of the invention

[0006] The purpose of the present invention is to provide a rail-type passenger device for mines and a speed limiting brake thereof in view of the above problems, so as to solve the problems of structural load, potential safety hazards and low automation level of the passenger device in the background technology.

[0007] To achieve the above purpose, the technical solution adopted by the present invention is: a speed limiting brake, used for running on an I-shaped track, comprising:

[0008] frame;

[0009] A first braking device, which is mounted on the frame and includes a first elastic member and braking components connected to both ends of the first elastic member;

[0010] A running wheel assembly is mounted on the frame, wherein the wheel body of at least one running wheel assembly is coaxially connected to a centrifugal mechanism;

[0011] A lever mechanism, comprising a rotating shaft rotatably arranged on the frame, wherein two ends of the rotating shaft are respectively fixedly connected with a first shifting part and a second shifting part, and the first shifting part is arranged below the centrifugal mechanism;

[0012] Two compression mechanisms are arranged at two ends of the first elastic member, each of the compression mechanisms has an abutment portion abutting against the corresponding toggle portion, and the two compression mechanisms abut against the corresponding toggle portions to keep the first elastic member in a compressed state;

[0013] When the rotation speed of the traveling wheel assembly reaches a preset value, the centrifugal mechanism pushes the first toggle part to rotate to drive the rotating shaft to rotate, so that the first toggle part and the second toggle part are disengaged from the abutment part of the corresponding compression mechanism at the same time to release the first elastic member, so that the braking component acts on the I-rail.

[0014] In a possible embodiment, the first toggle portion includes a trigger portion and a first contact portion, the end of the trigger portion is located below the centrifugal mechanism and is spaced a set distance apart, and the trigger portion and the first contact portion are arranged at an angle; the second toggle portion includes a second contact portion, and the second contact portion is arranged parallel to the first contact portion; the first contact portion and the second contact portion are respectively abutted against the corresponding abutment portion of the compression mechanism.

[0015] In a possible embodiment, the length of the trigger portion is greater than the length of the first contact portion, and the length of the first contact portion is the same as the length of the second contact portion.

[0016] In a possible embodiment, the centrifugal mechanism includes a drum device, and the drum device is coaxially connected to the wheel body of the walking wheel assembly through a wheel axle;

[0017] The drum device comprises:

[0018] A cylinder, wherein the outer wall of the cylinder is provided with a through hole;

[0019] A center seat, which is disposed in the cylinder;

[0020] At least one swinging rod is movably arranged in the through hole, and the inward end of the swinging rod is connected to the central seat through a second elastic member.

[0021] In a possible embodiment, the two compression mechanisms are arranged opposite to each other along the axial direction of the first elastic member, and the compression mechanism includes a connecting portion, one end of the connecting portion is fixedly connected to the corresponding end of the first elastic member, and the other end of the connecting portion is provided with the abutting portion;

[0022] When the first elastic member is in a compressed state, the abutting portions on the two connecting portions are arranged between the two shifting portions.

[0023] In a possible embodiment, the braking component includes two first brake arms and two first brake blocks, the middle parts of the two first brake arms are hinged on the frame, the first ends of the two first brake arms are respectively connected to the corresponding ends of the first elastic member, and the second ends of the two first brake arms are respectively connected to one of the first brake blocks.

[0024] The present invention also provides a rail-type passenger device for mines, comprising a passenger frame, a driving device, a power supply device and the above-mentioned speed limiting brake;

[0025] The passenger frame is provided with a seat, a footrest and a battery rack, the footrest is provided below the seat, and a speed pedal is provided on the footrest; the speed limiting brake is provided on the top of the passenger frame;

[0026] The driving device comprises two driving rubber wheels and two driving motors, the two driving motors are respectively connected to the corresponding driving rubber wheels, and the speed pedal is electrically connected to the driving motors to control the speed of the driving motors;

[0027] The power supply device is installed on the battery rack and is used to provide power to the driving motor.

[0028] In a possible embodiment, the driving device further includes:

[0029] Two reducers, the output shaft of each reducer is fixedly connected to the corresponding driving rubber wheel;

[0030] Two swing arms, each of which is equipped with a reducer, and the reducer is connected to the corresponding drive motor;

[0031] The first ends of the two swing arms are respectively hinged on the passenger frame, and the second ends of the two swing arms are connected to each other through a third elastic member so that the two driving rubber wheels abut against the web surface of the track.

[0032] In a possible embodiment, it also includes a second braking device, which is arranged on the passenger frame, including a first pushing mechanism, two second brake arms and two second brake blocks, the first ends of the two second brake arms are respectively connected to the two ends of the first pushing mechanism, the second ends of the two second brake arms are respectively connected to the two second brake blocks, and the middle parts of the two second brake arms are hinged on the frame; a brake pedal is also arranged on the footrest, the brake pedal is electrically connected to the first pushing mechanism, and is used to control the extension and retraction of the first pushing mechanism, and the first pushing mechanism is electrically connected to the power supply device to obtain electricity.

[0033] In a possible embodiment, a second pushing mechanism is further provided on the passenger frame, and the second pushing mechanism is located at one side of the first toggle part, and the second pushing mechanism is used to control the first toggle part to rotate to a set angle to release the first elastic member.

[0034] The invention has the following beneficial effects: the purely mechanical speed-limiting brake structure is adopted, and no hydraulic system and oil tank are required, which is simpler and more compact than the traditional structure. The purely mechanical speed-limiting brake can automatically respond when braking is impossible due to an electric control failure, power failure or insufficient braking force, thereby preventing the locomotive from losing control and causing casualties. The lever mechanism is composed of a long rod (trigger part) and a short rod (contact part) to form a lever structure, which reduces the difficulty of the lever to push the trigger part and improves the reliability of braking.

[0035] The rail-type passenger device for mines provided by the present application realizes automatic braking protection against overspeeding by setting a speed limiting brake on the passenger frame, thereby ensuring safe operation. A second braking device is also provided as a conventional working braking system, which forms a double protection with the above-mentioned speed limiting brake, further improving driving safety. In addition, in an emergency, the lever mechanism of the speed limiting brake can also be controlled to rotate by the electric control device (second pushing mechanism), thereby realizing emergency braking and improving the safety of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of the front structural view of a speed limiting brake provided in one embodiment of the present invention.

[0037] Figure 2 A schematic side structural diagram of a speed limiting brake provided in one embodiment of the present invention.

[0038] Figure 3 A side structural schematic diagram of a first braking device provided in one embodiment of the present invention.

[0039] Figure 4 A schematic diagram of the internal structure (spinning-out state) of a rotating drum device provided in one embodiment of the present invention.

[0040] Figure 5A schematic diagram of the connection structure between a drum device and a wheel body provided in one embodiment of the present invention.

[0041] Figure 6 A schematic diagram of the three-dimensional structure of a lever mechanism provided in one embodiment of the present invention.

[0042] Figure 7 A schematic structural diagram of a rail-type passenger device for use in mines provided in one embodiment of the present invention.

[0043] The text labels in the figure are as follows: 100, speed limit brake; 110, drum device; 111, drum body; 112, swing rod; 113, second elastic member; 114, shaft sleeve; 115, center seat; 120, frame; 121, fixing sleeve; 130, lever mechanism; 131, triggering part; 132, first connecting seat; 133, rotating shaft; 134, first contact part; 135, second connecting seat; 136, second contact part; 140, compression mechanism; 141, abutting part; 142, connecting part; 150, first brake device; 151, first brake arm; 152, connecting plate; 153, first brake rod; 154. sleeve; 155. first brake block; 156. guide mechanism; 157. first elastic member; 160. walking wheel assembly; 161. wheel body; 162. fixing seat; 163. wheel axle; 200. passenger frame; 210. footrest; 211. speed pedal; 212. brake pedal; 220. control button; 230. seat; 300. driving device; 310. driving motor; 320. speed reducer; 330. driving rubber wheel; 340. third elastic member; 350. swing arm; 400. second braking device; 410. first pushing mechanism; 500. power supply device; 600. second pushing mechanism. DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present invention.

[0045] See also Figure 1-Figure 3 The present embodiment provides a speed limiting brake 100, which mainly includes a frame 120, a first brake device 150, a running wheel assembly 160, a drum device 110, a lever mechanism 130, a compression mechanism 140 and other components. The speed limiting brake 100 runs on an I-shaped track, and when the running speed of the locomotive exceeds a set value, it can automatically brake to ensure the safety of the locomotive operation.

[0046] refer to Figure 1 , Figure 2 and Figure 5The frame 120 includes two side plates and a connecting frame arranged between the two side plates, and a groove for the I-shaped track to pass through is formed between the two side plates. A pair of oppositely arranged running wheel assemblies 160 are respectively installed on the two side plates for running on the lower wing plate of the I-shaped track.

[0047] refer to Figure 2 and Figure 5 In a possible embodiment, one of the wheels 161 installed on one side plate is set as a speed measuring wheel, and the speed measuring wheel is fixedly connected to one end of its wheel axle 163, and the other end of the wheel axle 163 is fixedly connected to the drum device 110, and the wheel axle 163 is rotatably installed on the fixing seat 162, and the fixing seat 162 is fixedly connected to the frame 120. That is, when the wheel 161 rotates, the drum device 110 can be driven to rotate synchronously.

[0048] refer to Figure 4 and Figure 5 In some possible embodiments, the drum device 110 includes a drum body 111 and a swinging rod 112 disposed in the drum body 111. A center seat 115 is disposed at the center of the drum body 111. A plurality of through holes are disposed on the outer periphery of the drum body 111. In this embodiment, the number of through holes is designed to be 3, and the through holes are evenly arranged on the outer periphery of the drum body 111 around the center of the circle. In some possible embodiments, a plurality of sleeves 114 are fixedly disposed at the positions of the through holes of the drum body 111. The swinging rod 112 is disposed in the sleeves 114 and can move along the axis direction of the sleeves. A second elastic member 113 (such as a tension spring) is connected to the inner end (towards the center end of the drum body) of the swinging rod 112, and the other end of the second elastic member 113 is connected to the center seat 115. That is, when the rotation speed of the wheel body 161 reaches or exceeds the set value, the swinging rod 112 overcomes the pulling force of the second elastic member 113 under the action of centrifugal force and is thrown out from the corresponding through hole.

[0049] refer to Figure 1-Figure 3 In some possible examples, the first brake device 150 includes a first elastic member 157, two first brake arms 151, and two first brake blocks 155. The first elastic member 157 can be a compression spring, which pushes the two first brake blocks 155 to press against the web surface of the I-rail when in a released state, and the two first brake blocks 155 are detached from the web surface of the I-rail when in a contracted state.

[0050] In some examples, two first brake arms 151 are symmetrically arranged on two side plates of the frame 120, and are respectively hinged to the frame 120 through connecting plates 152. The first end of each first brake arm 151 is fixedly connected to the seat body at the end of the first elastic member 157, and the second end is connected to the first brake block 155 through the first brake rod 153. The first brake rod 153 is movably arranged in the sleeve 154 arranged on the two side plates, and can move along the axial direction of the sleeve 154.

[0051] refer to Figure 2 In some embodiments, the first elastic member 157 is guided by the guide mechanism 156, and a seat body is provided at both ends of the first elastic member 157, wherein a guide rod is provided on the seat body at one end, and a guide sleeve is provided on the seat body at the other end, and the guide rod is provided in the guide sleeve, thereby realizing the compression positioning and guiding of the first elastic member 157. In some examples, a slot for accommodating the first elastic member 157 is provided at the bottom of the frame.

[0052] refer to Figure 1 , Figure 2 and Figure 6 In some possible embodiments, the lever mechanism 130 includes a first toggle part and a second toggle part, wherein the first toggle part includes a first connection seat 132 and a trigger part 131 and a first contact part 134 fixed on the first connection seat 132, the length of the trigger part 131 is greater than the first contact part 134, the trigger part 131 and the first contact part 134 are arranged at an angle, and the angle α between the two can be 120° in this embodiment. The second toggle part includes a second connection seat 135 and a second contact part 136 fixed on the second connection seat 135, and optionally, the second contact part 136 has the same structure as the first contact part 134. A fixed sleeve 121 is fixedly arranged on the frame 120, and a rotating shaft 133 is rotatably arranged in the fixed sleeve 121, the second connection seat 135 is fixedly arranged at one end of the rotating shaft 133, and the first connection seat 132 is fixed to the other end of the rotating shaft 133 by a fastener such as a set screw. When the first toggle part rotates, the second toggle part also rotates synchronously.

[0053] Optionally, when the locomotive does not exceed the set speed, the end of the trigger portion 131 is located a certain distance below the rotating drum device 110. The trigger portion 131 and the first contact portion 134 here constitute a lever structure with the hinge point as the fulcrum.

[0054] refer to Figure 1-Figure 3 In some possible embodiments, two compression mechanisms 140 are arranged opposite to each other along the axial direction of the first elastic member 157, and the compression mechanism 140 includes a connecting portion 142, one end of the connecting portion 142 is fixedly connected to the end of the first elastic member 157, and the other end is fixedly provided with an abutting portion 141. Optionally, the abutting portion 141 is a convex block structure fixed on the connecting portion 142. By shortening the distance between the two compression mechanisms 140, the first elastic member 157 is in a compressed state.

[0055] In some embodiments, when the two abutting portions 141 are disposed between the first toggle portion and the second toggle portion, the first elastic member 157 is in a compressed state. Optionally, the two compression mechanisms 140 can be compressed using a clamp to allow the two abutting portions 141 to be disposed between the first toggle portion and the second toggle portion, and then the lever mechanism 130 is rotated to allow the first contact portion 134 and the second contact portion 136 to cooperate with the corresponding abutting portions 141.

[0056] refer to Figure 1-Figure 3 In some possible embodiments, avoidance grooves are provided on both sides of the abutment portion 141, that is, when the first contact portion 134 and the second contact portion 136 rotate a certain angle and fall into the avoidance grooves, the first elastic member 157 is released, thereby driving the two first brake blocks 155 to clamp on the I-shaped rail. Figure 3 In some embodiments, the connecting portion 142 is configured as a cylindrical structure, the first elastic member 157 is disposed in the cylindrical structure and one end thereof is fixed to the bottom of the cylindrical structure, and the abutting portion 141 is disposed on the outer wall of the inner end of the cylindrical structure.

[0057] When the present embodiment is used, when the speed limiting brake 100 is running normally with the vehicle, the first elastic member 157 is in a compressed state, and the first contact portion 134 and the second contact portion 136 abut against the abutment portions 141 of the two compression structures. When the rotation speed of the wheel body reaches or exceeds the set value, under the action of centrifugal force, the swinging rod 112 overcomes the elastic force of the second elastic member 113 and swings out from the through hole. The swinging rod 112 contacts the triggering portion 131 and pushes the triggering portion 131 to rotate around its rotating shaft 133. As the lever mechanism 130 rotates, the first contact portion 134 and the second contact portion 136 are separated from the abutment portion at the same time and fall into the avoidance groove. At this time, the first elastic member 157 loses its constraint and is released, driving the first brake arm 151 to rotate, thereby pushing the first brake block 155 to contact the web of the I-rail through the first brake rod 153 to achieve braking.

[0058] The speed limiting brake 100 of this embodiment has a simple structure, does not need to be configured with a hydraulic drive system, and can be used when the power is off, ensuring safe operation.

[0059] refer to Figure 1 and Figure 2 Furthermore, in order to increase the braking force of the first elastic member 157 and reduce the difficulty of the swinging rod 112 pushing the lever mechanism 130, in this embodiment, the two wheels 161 on the side plate are coaxially connected with the drum device 110, and the two drum devices 110 push the two lever mechanisms 130 to move, and the triggering parts of the two lever mechanisms 130 respectively abut against the corresponding abutting parts 141 on the compression mechanism 140. The first elastic member 157 is pressed by the two lever mechanisms 130, thereby reducing the difficulty of the swinging rod 112 pushing the triggering part 131.

[0060] refer to Figure 7 In another embodiment, a rail-type passenger device for mines is also provided, which is suitable for single-person transportation on the I-shaped track of the mine. The device mainly includes a passenger frame 200, a driving device 300, a power supply device 500 and a second braking device 400. The passenger frame 200 adopts a frame structure welded from steel materials and has sufficient strength and rigidity. The passenger frame 200 includes an L-shaped hanger, on which a seat 230 is arranged. A footrest 210 is arranged below the seat, and an anti-slip pad is arranged on the footrest 210. In some possible embodiments, a speed pedal 211 and a brake pedal 212 are arranged on the footrest 210. Among them, the speed pedal 211 is connected to the control system of the drive motor, adopts a potentiometer structure, and the pedal angle corresponds to different driving speeds; the brake pedal 212 is used to control the action of the first pushing mechanism 410 on the second braking device 400, so as to achieve the adjustment of the braking force. A battery rack is provided on the passenger frame 200, a power supply device 500 is provided in the battery rack, and a battery fixing device and a heat dissipation sealing plate are provided on the battery rack. The passenger frame 200 is also fixedly connected with the speed limiting brake 100 of the above embodiment for overspeed protection, and the speed limiting brake 100 and the passenger frame 200 run on the I-shaped track together.

[0061] refer to Figure 7 In some possible embodiments, the driving device 300 includes a driving rubber wheel 330, a reducer 320, a driving motor 310 and a swing arm 350. The two driving rubber wheels 330 are made of rubber material to ensure sufficient friction with the web surface of the I-shaped track. The reducer 320 is connected to the driving rubber wheel 330 by screws. The reducer 320 is fixedly mounted on the swing arm 350 by screws. The driving motor 310 is a three-phase asynchronous motor or a permanent magnet motor, and its output shaft is connected to the reducer 320. The first end of the swing arm 350 is hinged to the passenger frame 200 through a pin shaft. The second ends of the two swing arms 350 are connected by a third elastic member 340 (tension spring) so that the two driving rubber wheels 330 are elastically attached to the web surface of the I-shaped track. The tension of the third elastic member 340 ensures that the driving rubber wheels 330 maintain good contact with the web of the track to adapt to running on curved tracks and slope tracks. The swing arm 350 can rotate around the axis of the pin shaft, which is convenient for installation and maintenance of the driving device 300.

[0062] The power supply device 500 is installed in the battery rack, and includes a lithium battery pack, a battery management system, a charging interface, and a power management controller. The power supply device 500 is electrically connected to the drive motor 310 to provide power to the drive motor 310 and other electrical devices.

[0063] Continue to refer Figure 7In some embodiments, the rail-type passenger device for mines further includes a second brake device 400, which serves as a normal working brake system. Optionally, the second brake device 400 is similar in structure to the first brake device 150, and includes a first pushing mechanism 410, a second brake arm, and a second brake block, wherein the first pushing mechanism 410 uses a linear explosion-proof electric push rod, which is electrically connected to the power supply device and powered by the power supply device 500; the two second brake arms are symmetrically arranged, the first ends of the two second brake arms are connected to the two ends of the first pushing mechanism 410, and the second ends are connected to the second brake block through the second brake rod, and the second brake rod is installed on the other two matching sleeves on the two side plates of the frame. The two second brake arms are hinged to the frame 120 through a connecting plate. The brake pedal 212 is electrically connected to the controller of the first pushing mechanism 410, and the pedal displacement corresponds to the braking force.

[0064] That is, conventional braking of the locomotive on the track is achieved through the second braking device 400, which is used to control the parking of the passenger device under normal working conditions.

[0065] In some possible embodiments, a second pushing mechanism 600 is further provided on the passenger frame 200. The second pushing mechanism 600 may optionally be an explosion-proof electric push rod. The piston rod of the second pushing mechanism 600 is used to abut against the trigger part 131 when extended to push the trigger part 131 to rotate around its hinge axis to a set angle to achieve emergency braking. That is, in non-overspeed conditions, the control switch can also be used to control the rotation of the lever mechanism 130 to achieve braking with a large braking force. This situation is suitable for when an emergency situation on a slope requires parking, and double braking is used to ensure braking safety.

[0066] Optionally, a control button portion 220 is provided on the frame 120 at a position convenient for passenger operation, and the control button portion 220 is provided with a switch button and a manual emergency stop button.

[0067] In some possible embodiments, the driving motor 310 , the first pushing mechanism 410 , and the second pushing mechanism 600 are all explosion-proof electrical products to meet the needs of underground coal mines.

[0068] In some embodiments, the passenger device further includes a control module, which serves as the core control unit of the entire passenger device: when the control module serves as an input end, the control module receives multiple control signals, including: the speed pedal inputs an angle signal through a potentiometer to control the driving speed; the displacement signal of the brake pedal is used to control the braking force; the control button provides a start-stop signal; and the manual emergency stop button provides an emergency braking signal. When the control module serves as an output end, the control module is responsible for controlling multiple actuators, including: sending a speed control signal to the drive motor to adjust the running speed; controlling the first push mechanism to perform conventional braking; and controlling the second push mechanism to achieve emergency braking when necessary. At the same time, each actuator will feed back its operating status to the control module to achieve closed-loop control. In terms of power management, the control module maintains two-way communication with the power management system: receiving the battery status information provided by the battery management system and the charging status information of the charging interface, and sending power demand to the power management system to ensure the stability of the power supply of the entire system. In terms of safety control, when overspeed is detected or an emergency stop signal is received, the control module will immediately execute the braking command.

[0069] When this embodiment is used specifically: when starting, the operator sits on the seat 230 and steps on the pedal 210. The switch button is controlled to make the drive motor 310 work with electricity, and the speed pedal 211 is stepped on to control the running speed of the drive motor, and the drive rubber wheel 330 is driven to rotate through the reducer 320. The swing arm 350 keeps the drive rubber wheel 330 in good contact with the I-shaped rail under the action of the third elastic member 340. During normal braking, the brake pedal 212 is stepped on, and the first pushing mechanism 410 pushes the second brake arm so that the second brake block abuts against the I-shaped rail to achieve braking. When the running speed exceeds the safety value, the speed limit brake 100 automatically acts to perform braking protection. By setting a purely mechanical speed limit brake 100, it can automatically respond when the electric control fails to brake or the power is off or the braking force is insufficient, so as to prevent the locomotive from losing control and causing casualties. Before the speed limit brake 100 is triggered or when there is no action, the second pushing mechanism 600 can also be controlled to push the trigger part 131 to rotate to achieve double braking to ensure safety.

[0070] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0071] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A rail-type passenger device for mines, characterized in that: It includes a passenger frame, a driving device, a power supply device and a speed limiting brake; The passenger frame is provided with a seat, a footrest and a battery rack, the footrest is provided below the seat, and a speed pedal is provided on the footrest; the speed limiting brake is provided on the top of the passenger frame; The driving device comprises two driving rubber wheels and two driving motors, the two driving motors are respectively connected to the corresponding driving rubber wheels, and the speed pedal is electrically connected to the driving motors to control the speed of the driving motors; The power supply device is installed on the battery rack and is used to provide power to the drive motor; The speed limiting brake comprises: frame; A first braking device, which is mounted on the frame and includes a first elastic member and braking components connected to both ends of the first elastic member; A running wheel assembly is mounted on the frame, wherein a wheel body of at least one running wheel assembly is coaxially connected to a centrifugal mechanism; A lever mechanism, comprising a rotating shaft rotatably arranged on the frame, wherein two ends of the rotating shaft are respectively fixedly connected with a first shifting part and a second shifting part, and the first shifting part is arranged below the centrifugal mechanism; Two compression mechanisms are arranged at two ends of the first elastic member, each of the compression mechanisms has an abutment portion abutting against the corresponding toggle portion, and the two compression mechanisms abut against the corresponding toggle portions to keep the first elastic member in a compressed state; When the rotation speed of the traveling wheel assembly reaches a preset value, the centrifugal mechanism pushes the first toggle part to rotate to drive the rotating shaft to rotate, so that the first toggle part and the second toggle part are simultaneously disengaged from the abutment parts on the corresponding compression mechanism to release the first elastic member, and then the braking component acts on the I-rail.

2. The rail-type passenger device for mines according to claim 1, characterized in that: The first toggle portion includes a trigger portion and a first contact portion, the end of the trigger portion is located below the centrifugal mechanism and is spaced a set distance apart, and the trigger portion and the first contact portion are arranged at an angle; the second toggle portion includes a second contact portion, and the second contact portion is arranged parallel to the first contact portion; the first contact portion and the second contact portion are respectively abutted against the corresponding abutment portion of the compression mechanism.

3. The rail-type passenger device for mines according to claim 2, characterized in that: The length of the trigger portion is greater than that of the first contact portion, and the length of the first contact portion is the same as that of the second contact portion.

4. The rail-type passenger device for mines according to claim 1, characterized in that: The centrifugal mechanism comprises a drum device, and the drum device is coaxially connected to the wheel body of the walking wheel assembly through a wheel axle; The drum device comprises: A cylinder, wherein the outer wall of the cylinder is provided with a through hole; A center seat, which is disposed in the cylinder; At least one swinging rod is movably arranged in the through hole, and the inward end of the swinging rod is connected to the central seat through a second elastic member.

5. The rail-type passenger device for mines according to claim 1, characterized in that: The two compression mechanisms are arranged opposite to each other along the axial direction of the first elastic member, and the compression mechanism comprises a connecting portion, one end of the connecting portion is fixedly connected to the corresponding end of the first elastic member, and the other end is provided with the abutting portion; When the first elastic member is in a compressed state, the abutting portions on the two connecting portions are arranged between the two shifting portions.

6. The rail-type passenger device for mines according to claim 1, characterized in that: The braking component includes two first brake arms and two first brake blocks. The middle parts of the two first brake arms are hinged on the frame. The first ends of the two first brake arms are respectively connected to the corresponding ends of the first elastic member, and the second ends of the two first brake arms are respectively connected to one of the first brake blocks.

7. The rail-type passenger device for mines according to claim 1, characterized in that: The driving device further comprises: Two reducers, the output shaft of each reducer is fixedly connected to the corresponding driving rubber wheel; Two swing arms, each of which is equipped with a reducer, and the reducer is connected to the corresponding drive motor; The first ends of the two swing arms are respectively hinged on the passenger frame, and the second ends of the two swing arms are connected to each other through a third elastic member so that the two driving rubber wheels abut against the web surface of the I-shaped track.

8. The rail-type passenger device for mines according to claim 1, characterized in that: It also includes a second braking device, which is arranged on the passenger frame and includes a first pushing mechanism, two second brake arms and two second brake blocks, the first ends of the two second brake arms are respectively connected to the two ends of the first pushing mechanism, the second ends of the two second brake arms are respectively connected to the two second brake blocks, and the middle parts of the two second brake arms are hinged on the frame; a brake pedal is also arranged on the footrest, the brake pedal is electrically connected to the first pushing mechanism, and is used to control the extension and retraction of the first pushing mechanism, and the first pushing mechanism is electrically connected to the power supply device to obtain electricity.

9. The rail-type passenger device for mines according to claim 1, characterized in that: A second pushing mechanism is also provided on the passenger frame. The second pushing mechanism is located at one side of the first toggle part. The second pushing mechanism is used to control the first toggle part to rotate to a set angle so as to release the first elastic member.

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